Accessing a CGI exe within VB.net code

I'm trying to create a wrapper in VB.net to display an image that is created by a CGI exe. The CGI exe is designed to recieve a link from IIS and return an image according to the variables that are passed. I am trying to use this same CGI without IIS or browser. I think I've got most of it written but am having trouble with passing the http: string from within VB. Browsing around I found MSXML but I wanted to know what the equivelant is in vb.net? any help would be greatly appreciated.